Maybe. Judging from the reactions I'm seeing elsewhere, some people (mostly women) see it, while others (including some women) don't seem to notice. So it's not as blatant as something like, say, an Avengers poster where all the men are in heroic tough-guy poses and Black Widow is sticking her ass at the camera. Still, there are some people who find it distracting, and it could've easily been tweaked a little to diminish that -- make the costume a bit less molded, turn the torso a bit more toward the camera, show more of the face and eyes, any or all of those things.
I mean, sexualization issues aside, why not showcase Wonder Woman's face? She's a character we admire for her compassion, her kindness, her wisdom, her strength of character, her reassuring presence. Those are things that would be best conveyed by an image that showcases her face, her eyes, her smile. It is a very aesthetically pleasing poster what with the colors and brightness and all, but having her face in darkness and her eyes unseen takes something away from it. It feels incomplete.
I dunno, it seems to be a general trend among graphic artists these days to de-emphasize faces. I heard recently that a lot of book covers these days are doing compositions like that, focusing on the torso and cutting off the face, on the theory that it lets readers imagine the characters however they wish -- or maybe on the theory that it saves money on model or actor likeness rights. None of that would apply here, but maybe it's just a case of a graphic designer falling back on a common formula. I just don't think it's ideal here.